Hi Clive,
thank you very much!
These are the pin connections (I hope this is what you mean):
STM32F767ZITx
PC8 SDMMC1_D0
PC9 SDMMC1_D1
PC10 SDMMC1_D2
PC11 SDMMC1_D3
PB8 SDMMC1_D4
PB9 SDMMC1_D5
PC6 SDMMC1_D6
PC7 SDMMC1_D7
PD2 SDMMC1_CMD
PC12 SDMMC1_CKvoid HAL_MMC_MspInit(MMC_HandleTypeDef* mmcHandle)
{
GPIO_InitTypeDef GPIO_InitStruct;
if(mmcHandle->Instance==SDMMC1)
{
/* USER CODE BEGIN SDMMC1_MspInit 0 */
/* USER CODE END SDMMC1_MspInit 0 */
/* SDMMC1 clock enable */
__HAL_RCC_SDMMC1_CLK_ENABLE();
/**SDMMC1 GPIO Configuration
PC6 ------> SDMMC1_D6
PC7 ------> SDMMC1_D7
PC8 ------> SDMMC1_D0
PC9 ------> SDMMC1_D1
PC10 ------> SDMMC1_D2
PC11 ------> SDMMC1_D3
PC12 ------> SDMMC1_CK
PD2 ------> SDMMC1_CMD
PB8 ------> SDMMC1_D4
PB9 ------> SDMMC1_D5
*/
GPIO_InitStruct.Pin = SDMMC1_D6_Pin|SDMMC1_D7_Pin|SDMMC1_D0_Pin|SDMMC1_D1_Pin
|SDMMC1_D2_Pin|SDMMC1_D3_Pin|SDMMC1_CK_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_SDMMC1;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
GPIO_InitStruct.Pin = SDMMC1_CMD_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_SDMMC1;
HAL_GPIO_Init(SDMMC1_CMD_GPIO_Port, &GPIO_InitStruct);
GPIO_InitStruct.Pin = SDMMC1_D4_Pin|SDMMC1_D5_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_VERY_HIGH;
GPIO_InitStruct.Alternate = GPIO_AF12_SDMMC1;
HAL_GPIO_Init(GPIOB, &GPIO_InitStruct);
/* SDMMC1 DMA Init */
/* SDMMC1 Init */
hdma_sdmmc1.Instance = DMA2_Stream3;
hdma_sdmmc1.Init.Channel = DMA_CHANNEL_4;
hdma_sdmmc1.Init.Direction = DMA_PERIPH_TO_MEMORY;
hdma_sdmmc1.Init.PeriphInc = DMA_PINC_DISABLE;
hdma_sdmmc1.Init.MemInc = DMA_MINC_ENABLE;
hdma_sdmmc1.Init.PeriphDataAlignment = DMA_PDATAALIGN_WORD;
hdma_sdmmc1.Init.MemDataAlignment = DMA_MDATAALIGN_WORD;
hdma_sdmmc1.Init.Mode = DMA_PFCTRL;
hdma_sdmmc1.Init.Priority = DMA_PRIORITY_LOW;
hdma_sdmmc1.Init.FIFOMode = DMA_FIFOMODE_ENABLE;
hdma_sdmmc1.Init.FIFOThreshold = DMA_FIFO_THRESHOLD_FULL;
hdma_sdmmc1.Init.MemBurst = DMA_MBURST_INC4;
hdma_sdmmc1.Init.PeriphBurst = DMA_PBURST_INC4;
if (HAL_DMA_Init(&hdma_sdmmc1) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/* Several peripheral DMA handle pointers point to the same DMA handle.
Be aware that there is only one stream to perform all the requested DMAs. */
/* Be sure to change transfer direction before calling
HAL_SD_ReadBlocks_DMA or HAL_SD_WriteBlocks_DMA. */
__HAL_LINKDMA(mmcHandle,hdmarx,hdma_sdmmc1);
__HAL_LINKDMA(mmcHandle,hdmatx,hdma_sdmmc1);
/* SDMMC1 interrupt Init */
HAL_NVIC_SetPriority(SDMMC1_IRQn, 0, 0);
HAL_NVIC_EnableIRQ(SDMMC1_IRQn);
/* USER CODE BEGIN SDMMC1_MspInit 1 */
/* USER CODE END SDMMC1_MspInit 1 */
}
}Yet, I do not use DMA or interrupt for the card, but I prepared some configurations for that.
I have routed printf to USART2, and enabled formatting for float too:
int __io_putchar(int ch)
{
uint8_t c[1];
c[0] = ch & 0x00FF;
HAL_UART_Transmit(&huart2, &*c, 1, 10);
return ch;
}
int _write(int file,char *ptr, int len)
{
int i;
for(i = 0; i < len; i++)
{
__io_putchar(*ptr++);
}
return len;
}
PLL48CLK (48MHz) to MMC
void SystemClock_Config(void)
{
RCC_OscInitTypeDef RCC_OscInitStruct;
RCC_ClkInitTypeDef RCC_ClkInitStruct;
RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
/**Configure the main internal regulator output voltage
*/
__HAL_RCC_PWR_CLK_ENABLE();
__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
RCC_OscInitStruct.HSEState = RCC_HSE_ON;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
RCC_OscInitStruct.PLL.PLLM = 25;
RCC_OscInitStruct.PLL.PLLN = 432;
RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
RCC_OscInitStruct.PLL.PLLQ = 9;
if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Activate the Over-Drive mode
*/
if (HAL_PWREx_EnableOverDrive() != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Initializes the CPU, AHB and APB busses clocks
*/
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_7) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART2|RCC_PERIPHCLK_USART3
|RCC_PERIPHCLK_I2C2|RCC_PERIPHCLK_SDMMC1
|RCC_PERIPHCLK_CLK48;
PeriphClkInitStruct.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1;
PeriphClkInitStruct.Usart3ClockSelection = RCC_USART3CLKSOURCE_PCLK1;
PeriphClkInitStruct.I2c2ClockSelection = RCC_I2C2CLKSOURCE_PCLK1;
PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48SOURCE_PLL;
PeriphClkInitStruct.Sdmmc1ClockSelection = RCC_SDMMC1CLKSOURCE_CLK48;
if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
{
_Error_Handler(__FILE__, __LINE__);
}
/**Configure the Systick interrupt time
*/
HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
/**Configure the Systick
*/
HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
/* SysTick_IRQn interrupt configuration */
HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}Kind regards,
Jack.
Hi Clive, USART 2 is on PD5 (TX) and PD6 (RX). Thanks, Jack.
